Performance Analysis of the Outer-Rotor Surface-Mounted Permanent Magnet Synchronous Motor for High Altitude Long Endurance Unmanned Aerial Vehicle applied Grain-Oriented Electrical Steel

摘要

This paper deal with the performance analysis of the outer-rotor surface-mounted permanent magnet synchronous motor applied grain-oriented electrical steel (GO). GO is a steel manufactured to facilitate magnetization in the rolling direction of the steel sheet. It has outstanding magnetic properties in the rolling direction. On the other hand, it shows rather low magnetic properties in the transverse direction. In this paper, the GO was applied to stator teeth area with a relatively constant magnetic flux direction. Analysis of the characteristics according to the connection size of the GO and the load, no-load analysis was performed through finite element analysis. As a result of the analysis, the average torque was increased, the torque ripple was decreased, and the efficiency was increased due to the iron loss reduction in the load analysis. In addition, the no-load analysis showed a decrease in total harmonic distortion and cogging torque. Therefore, if the GO is used in an appropriate position in which the magnetic flux direction is considered, it is expected to be applied to various applications to show superior performance.